Birth: the Negus of Aksum
c. 580 CE approximate debated before the Hijra
The Christian king of Aksum who gave the first Muslim exiles refuge and heard Ja'far's recitation — remembered in the tradition as a just ruler who, in some reports, himself became a Muslim.
Ibn Sa'd, Kitab al-Tabaqat al-Kabir (Bewley translation, Ta-Ha)